Railway-motor-truck bolster



R. S. ZEITLER. RAILWAY MOTOR'IRUCK BOLSTEH.

APPLICATION FILED NOV. 28.191].

1 ,332,588. Patented Mar. 2, 1920.

2 SHEETS-SHEET I.

I L I IIII I II 1- I Ila UNITED STATES PATENT omnon. I

RAYMOND S. ZEITLE'R, OF CHAMPAIGN, ILLINOIS, ASSIGNOR TO THE ZEITLER GASCAR & LOCOMOTIVE OOMPANY, OF CHIQAGO, ILLINOIS, A CORPORATION OFDELAWARE.

RAILWAY-MOTOR-TRUCK BOLSTER.

Application filed November 28, 1917.

To all'whom it may concern:

Be it known that I, RAYMOND S. Znrrrnn, a citizen of the United States,and a resident of Champ'aign, in the county of Champaign and State ofIllinois, have invented a new and useful RailWay-Motor-Truck Bolster, ofwhich the following is a specification. 1

My invention relates to the trucks of railway cars wherein a motor suchas a gas-engine is incorporated for the purpose of prop'elling the car.More particularly my invention has reference to the designandconstruction of the truck bolster employed in a car-truck of this type.

One of the objects of my invention is to so construct the bolster of astandard Master Car Builders railway car-truck that it may be utilizedas the crank case of the gasengine. Another object is to provide thebolster with means whereby the cylinders of the gas-engine may besecured directly thereto and be supported or sustained thereby. Otherobjects of my invention are the provision of means whereby the saidbolster will be so suspended within the confines of the car-truck thatit will meet the Master Oar Builders requirements relating tocar-trucks; to provide means whereby a swing-motion may take placewithout displacement of any of the elements of the truck and engine; toarrange allthe parts of the device in a compact manner so that none ofthe same will be disposed in a hori zontal plane above the horizontalplane of the center-bearing; and to construct a bolster that iseffective in operation, easy to repair, and comparatively inexpensive tomanufacture.

I prefer to accomplish these objects by the means and in the mannerhereinafter fully described and as more particularly pointed out in theclaims, reference being had to the accompanying drawings forming a partof this specification, in which Figure 1 is a longitudinal sideelevation of my improved bolster. showing the same applied to a standardrailway car-truck.

Fig. 2 is a side View of the car-truck partially in section andpartially in elevation, to illustrate the relative construction andlocation of the bolster and its connected and related parts.

Fig. 3 is a plan view of my bolster detached from the car-truck, aportion of said Specification of Letters Patent.

Patented Mar.2, 1920.

Serial No. 204,354.

bolster being illustrated in section and drawn to an enlarged scale.

Referring to the drawings, similar reference characters are employed toindicate the same parts throughout thevarious figures.

In Fig. 2 it will be observed the car-truck comprises the usual elementsnecessary under the requirements of the Master Car Builders Associationand need not be described in detail. The side frame here illustrated isof the cantaliver type, provided with an equalizing bar 5, the ends ofwhich are bent upwardly and laterally to provide means for securing theusual journal boxes 6 thereto. The upper arch bar 7 of the side frame ispreferably a horizontally disposed angle beam or other suitablestructure, and has strapped thereto the usual fiat springs 8, one of theends of which terminates adjacent the bolster opening and above theplane of the upper arch bar. Suitable depending links 9, 9, are carriedby pins 3 mounted in blocks a that are adapted to rock at the ends ofthe springs nearest the bolster and said links have enlargements 10 attheir lower'ends, through which a transverse pin 11 is adapted to pass,and upon this pin the bolster is supported so as to permit of a swingmotion of the latter as will hereinafter more fully appear.

My improved bolster comprises a hollow, composite or built-up structurepreferably formed of angle metal and plates, and, as will be observedfrom the drawings. the central portion of the bolster is substantiallyrectangular in cross section. The vertical side-walls of the bolstercomprise rectangular shaped, elongated plates12, 13, that have annularflanges 13 at their ends that project both inwardly and outwardly. Aflange 14 is formed at the upper edges of the sidewalls and a top plate15 is secured to these flanges 'toconnect the side-walls, and at itscenter said top-plate is provided with the usual center-bearing 16. Atthe bottom of the side-walls is an inturned flange 17 to which a bottomplate 18- is secured and which connects and forms the box-like structureof the .center portion of the bolster.

To the flanges 13 at the ends of the center portion of the bolster aresecured intermediate or filler plates 19 that preferably close 'the endsof the rectangularshaped portion of the bolster and are provided with acentral opening 20, through which a crank-shaft 21 extends. Secured uponthe outer surface of these filler plates 19, are substantialcylindrical-shaped end portions 21 that are provided with parallel,laterally disposed suspending lugs 22, upon opposite sides thereof, andthrough which- 23 is secured upon and closes the outer ends of thecylindrical-shaped end portions 21 of the bolster and has ascrew-threaded opening in its central portion, into which a suitablebearing plate 24 is screwed for providing end-bearing for the adjacentends of the crank-shaft 21 and which is provided with suitableanti-frictional devices.

Fitted within the cylindrical-shaped portions 21 aresuitable roundbushings 25 that correspond in dimensions to the inside diameter of saidend portions, (the central portion of the bushing 25 is bored out toreceive the crank-shaft to which it is keyed by a key 26,) and saidbushing is also pro vided with concentric bores 27 that are utilized aspiston chambers in the operation of my bolster when employed inconnection with a hydraulic transmission and power device for drivingthe wheels of the truck, similar to the structure described andillustrated in my co-pending application for Letters Patent of theUnited States for improvements in a motor-driven truck for railway cars,filed November 28, 1917, Serial No. 204,355.

As before stated, my improved bolster is adapted to form the crank caseof a suitable motor and I have provided upon the sidewalls 12 suitableopenings 28 around which are secured the cylinders 29 of a suitableengine, preferably a gas or internal combustion engine. The pistons 30of this engine are adapted to reciprocate in the cylinders 29 and areconnected by a connecting rod or pitman 31 with the crank-shaft 21housed within the bolster.

While I have illustrated and described certain specificinstrumentalities for carrying out my invention, it, of course, will beobvious to others, skilled in the art to which my inventionpertains,that various modifications or refinements thereof are possible,without materially departing from the spirit of'my invention. I,therefore, desire it understood that all such changes are contemplatedwithin the scope of my invention as expressed in the appended claims,and I also do not wish to be understood as limiting myself to anyparticular shape or outline of my improved truck bolster. i

What I claim is K 1. A combined motor crank case and swing motion truckbolster.

2. A combined motor crank case and hollow swing motion truck bolster.

3. In combination in a car-truck, sideframes, and a combined motor crankcase and truck bolster connected at its ends to and suspended from, saidside-frames.

4:. A combined motor crank case and swing motion truck bolsterprovidedupon opposite sides, with laterally projecting engine cylinders.

5. A hollow swing motion bolster provided with bearings for journaling acrankshaft therein.

6. A hollow swing motion bolster provided with bearings for journaling acrankshaft therein, and provided with means for securing enginecylinders thereon.

7. A bolster comprising ,a substantially rectangular shaped centralportion, cylindrical end portions secured thereto, and caps mounted uponthe outer ends of said end portions.

8. A bolster comprising a central portion which is substantiallyrectangular in cross section and longitudinal section, and end portionssecured thereto, provided with bearings for journaling a crank-shafttherein.

9. A bolster provided with a central portion that is substantiallyrectangular in cross section and longitudinal section, an enginecylinder secured to the side-wall thereof, and bearings within saidbolster for journaling the crank-shaft of said engine cylinder.

10. A bolster provided with a central portion that is substantiallyrectangular in crosssectiou and longitudinal section, a plurality ofengine cylinders secured to the side-walls of said central portion, andbearings within said bolster for journaling the crank -shaft of saidengine cylinders.

11. A bolster provided with a central portion of substantiallyrectangular cross section, engine cylinders secured to the oppositeside-walls of said central portion, cylindrical extensions for saidcentral portion, and bearings within said extensions for journaling thecrank-shaft of said engine cylinders within said bolster.

In testimony whereof, I hereunto set my hand and seal this 7th day ofMay, 1915.

RAYMOND S. ZEITLER. [1,. s.]

R. L. MAXSON.

